bellstedt



(No Model.)

No.34L874.

C. BELLSTEDT.

s OVEN.

BAKER 3 Sheets-Sham; l`

j Patnted May-18,' 18816.

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i Wa MM (No Model.) 3 Sheets-Sheet 2. C. BELLSTEDT.

BAKERS OVEN.

`. #Patented May 18., 1886.

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CARL BELLSTEDT, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF 'IO i WILLIAM. SCHMIDT, OF SAME PLAGE.

BAKERS OVEN..

SPECIFICATION forming part oi' Letters Patent No. 34cl,874, dated May 18,1886.

Application filed February 24, 1885 To @ZZ whom 2115 may concern.-

Beit known that I. CARL BELLsTnDr, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Baking-Ovens, of which the following :is a specification, reference being had therein to the accompanying drawings.

My invention relates to certain improvements in baking-ovens.

The object of the invention is to so construct such ovens that the heat obtained may be best utilized, to provide means for cooling the oven quickly when desired, to provide for the sudden heating of the oven when occasion demands, and to retard the heat in its passage from the fire-box tothe smoke-stack, in order that the greatest benefits may be derived from it.

To the accomplishment of the above the invention consists of the novel construction of the oven, and in the devices and combination of devices used in connection therewith, as will be described and claimed. Reference will be made to the accompanying drawings, in which Figure l. is a longitudinal section through the oven, the section being taken on the lines l l in the remaining figures; Fig. 2, atransverse section on line 2 2; Fig. 3, a horizontal section on line 3 3; Fig. 4, a similar view 011 line 4t 4; Fig. 5, a similar view on line 5 5, and Fig. 6 a similar view on line 6 G.

Like letters refer to like parts in each view.

A represents the masonry of the oven; B, the rire-space; C, the gratos, and ID the oven l proper or baking-space.

At a point near the bottom of masonry there is provided an air-flue, Il, which opens into the open air, and,.after extending; Vforward a certain distance, as shown in Fig. 3, is formed .into two branches, E E2, each ol" which communicates with the ash-pit through ports c, Figs. l, 2, 3, thus providing means for feeding air to the fuel on the grates, and assisting combustion. The hot air arising from the fire-beds passes into flues F, which open directly thereabove, there being one series of such iiues foreach grate. Fines F are formed Serial No. 156,891. (No model.)

by walls F, Fig. 4, which, as shown, at suitable points are bent at right angles, and then continued back to the rear wall. This construction of walls or partitions F serves to form an abutment or offset in each flue F, against which the hot gases in their passage through such flues strike, and by which such hot gases are retarded in such fines.

After passing to the rear of iiues F the hot gas enters a series of vertical flues G, one for each of such iiues F. Flues G pass upwardly a suitable distance, and are then carried forward until each communicates with a flue, H, situated above the arch H, that forms the ceiling of the oven proper, such arch or ceiling being built of fire-brick, preferably of but the thickness of a single brick. Situated parallel with fines II are a series of iiues, IK, the two separated by a partition, K', but communicating near the front wall ol' the oven by forming partitions K slightly shorter than the iiues.

After passing through ilues H and K the gases are carried to ilucs M, situated on a higher plane than iiues II K. Flues M, of which there are two series, communicate with two transverse ilues or spaces, N, divided by a suitable partition, O, Fig. 2, and. `IluesN in turn communicate through openings I) with a transverse chamber, Q. Chamber Q communicates with a rearwardly-extending flue, It, through which connection is made with smoke-stack S. The openings I), which form the means of communication between chambers N Q, are closed by valves T, the operatingrods T of which pass through the front wall.

In the top wall of each fire-box there is formed a vertical iiuc, V, closed by a valve, WV, the operating-rod W" of which passes through the front wall, fines V at their upper ends communicating through ports b with the'oven proper. This construction and arrangement is adapted to be utilized whenever it is desired to heat the baking-compartment quickly, in which case the heat is ad- "mitted directly to such compartment by opening valves XV. At the rear end of the bakingcompartment communication is formed with a flue, X, which leads directly to Ilucs It, described as communicating with the smokesta-ck. Under cert-ain circumstances it is de- IOO sirable to cool the ceiling of the bakingoven, and this result I accomplish in the following Way: Situated over the coldair flue E is a transverse flue, Y, communicating with said cold-air flue. The opening through which this communication is formed is adapted, however, to be closed by a valve, Z, the operatingrod Z of which passes through the front wall. (See Fig. 3.) FlueY communicates with each of the ilues G, and when valve Z is opened the cold airis admitted through luesY G to ilues l H above the ceiling of the bakingcompartment, and the cooling of this ceiling accomplished.

Mounted in the masonry is a water-pipe, A', situated, preferably, on a line with iiues H K, and extending around three sides ofthe ovenwalls. This line of pipes protrudes at each end through the front wall, one end being connected with a suitable Water-supply, and the other preferably provided with a cock. By this arrangement it will be seen that water supplied to these pipes willbe heated, and a constant supply of hot water obtained.

A small boiler, B', is situated below the baking-compartment, said boiler connecting with a supply-pipe, C. Connected with the boileris a second pipe, D', which opens into the baking-compartment, thus providing for a damp heat, when desired.

the fire-box B and ilues F, G, II, and K, of

two upper series of horizontal flues, M, and two transverse fines or spaces, N, substantially as described.

2. In a baking-oven, the combination, with the fire-box B and flues F, G, H, K, and M, of 4o' the dues or spaces N, divided at the center, the chamber Q, the intermediate communicating openings, I), and valves T, the fines R, leading from said chamber to the smoke-stack, substantially as described.

3. In a baking-oven provided with iiues for the passage of air and gases from the {ire-box to the smoke-stack, a water-pipe, A, located in the masonry about on a line with the bakingcompartment and in close proximity to said ilues, and extending around three sides of the Walls, with any proper connection with awatersupply at one end, and provided with a cock on the other end, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses. v

CARL BELLSTEDT.

XVitnesses:

M. J. CLAGETT, Louis NOLTING. 

